package com.google.zxing.client;

import java.io.IOException;
import java.util.Vector;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.res.AssetFileDescriptor;
import android.graphics.Bitmap;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Bundle;
import android.os.Handler;
import android.os.Vibrator;
import android.view.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;

import com.android.nearshop.R;
import com.dg11185.nearshop.app.Constants;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.Result;
import com.google.zxing.client.camera.CameraManager;
import com.google.zxing.client.decoding.CaptureActivityHandler;
import com.google.zxing.client.decoding.InactivityTimer;
import com.google.zxing.client.view.ViewfinderView;
import com.umeng.analytics.MobclickAgent;

public class CaptureActivity extends Activity implements Callback, OnClickListener {

    private static final long VIBRATE_DURATION = 200L;

    private static final float BEEP_VOLUME = 0.10f;

    private CaptureActivityHandler handler;

    private ViewfinderView viewfinderView;

    private ShopInfo shopInfo;

    private boolean hasSurface;

    private Vector<BarcodeFormat> decodeFormats;

    private String characterSet;

    private InactivityTimer inactivityTimer; // 监听Activity是否长时间没有活动

    private MediaPlayer mediaPlayer; // 声音播放

    private boolean playBeep;

    private boolean vibrate;

    boolean isVoiceOpened = true;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.barcode_scan_main);
        CameraManager.init(getApplication());

        shopInfo = new ShopInfo();
        viewfinderView = (ViewfinderView) findViewById(R.id.viewfinder_view);
        hasSurface = false;
        inactivityTimer = new InactivityTimer(this);

    }

    @SuppressWarnings("deprecation")
    @Override
    protected void onResume() {
        super.onResume();
        SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view);
        SurfaceHolder surfaceHolder = surfaceView.getHolder();
        if (hasSurface) {
            initCamera(surfaceHolder);
        } else {
            surfaceHolder.addCallback(this);
            surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
        }
        decodeFormats = null;
        characterSet = null;

        playBeep = true;
        AudioManager audioService = (AudioManager) getSystemService(AUDIO_SERVICE);
        if (audioService.getRingerMode() != AudioManager.RINGER_MODE_NORMAL) {
            playBeep = false;
        }
        initBeepSound();
        vibrate = true;

        SharedPreferences preferences = this.getSharedPreferences(Constants.preferences_system_setting,
                Context.MODE_PRIVATE);
        isVoiceOpened = preferences.getBoolean("is_open_the_voice", true);
        this.findViewById(R.id.user_2dcode_scan).setOnClickListener(this);
        
        MobclickAgent.onPageStart(getClass().getName());
        MobclickAgent.onResume(this);
    }

    @Override
    protected void onPause() {
        super.onPause();
        if (handler != null) {
            handler.quitSynchronously();
            handler = null;
        }
        CameraManager.get().closeDriver();
        
        MobclickAgent.onPageEnd(getClass().getName());
        MobclickAgent.onResume(this);
    }

    @Override
    protected void onDestroy() {
        inactivityTimer.shutdown();
        super.onDestroy();
    }

    private void initCamera(SurfaceHolder surfaceHolder) {
        try {
            CameraManager.get().openDriver(surfaceHolder);
        } catch (IOException ioe) {
            return;
        } catch (RuntimeException e) {
            return;
        }
        if (handler == null) {
            handler = new CaptureActivityHandler(this, decodeFormats, characterSet);
        }
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        if (!hasSurface) {
            hasSurface = true;
            initCamera(holder);
        }

    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        hasSurface = false;

    }

    public ViewfinderView getViewfinderView() {
        return viewfinderView;
    }

    public Handler getHandler() {
        return handler;
    }

    public void drawViewfinder() {
        viewfinderView.drawViewfinder();
    }

    public void handleDecode(Result obj, Bitmap barcode) {

        if (isVoiceOpened) {
            playBeepSoundAndVibrate();
        }
        if (shopInfo.convertData(obj.toString())) {
            inactivityTimer.onActivity();
            viewfinderView.drawResultBitmap(barcode);

            Intent intent = new Intent(this, ScanSuccessActivity.class);
            intent.putExtra("shop_id", shopInfo.shopId);
            intent.putExtra("shop_name", shopInfo.shopName);
            intent.putExtra("shop_url", shopInfo.shopUrl);
            startActivity(intent);
        } else {
            Intent intent = new Intent(this, ScanFailActivity.class);
            startActivity(intent);
        }
        this.finish();
    }

    // public void restartPreviewAfterDelay(long delayMS) {
    // if (handler != null) {
    // handler.sendEmptyMessageDelayed(R.id.restart_preview, delayMS);
    // }
    // resetStatusView();
    // }

    private void initBeepSound() {
        if (playBeep && mediaPlayer == null) {
            // The volume on STREAM_SYSTEM is not adjustable, and users found it
            // too loud,
            // so we now play on the music stream.
            setVolumeControlStream(AudioManager.STREAM_MUSIC);
            mediaPlayer = new MediaPlayer();
            mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
            mediaPlayer.setOnCompletionListener(beepListener);

            AssetFileDescriptor file = getResources().openRawResourceFd(R.raw.beep);
            try {
                mediaPlayer.setDataSource(file.getFileDescriptor(), file.getStartOffset(), file.getLength());
                file.close();
                mediaPlayer.setVolume(BEEP_VOLUME, BEEP_VOLUME);
                mediaPlayer.prepare();
            } catch (IOException e) {
                mediaPlayer = null;
            }
        }
    }

    public void onBackClicked(View v) {
        this.finish();
    }

    private void playBeepSoundAndVibrate() {
        if (playBeep && mediaPlayer != null) {
            mediaPlayer.start();
        }
        if (vibrate) {
            Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
            vibrator.vibrate(VIBRATE_DURATION);
        }
    }

    /**
     * When the beep has finished playing, rewind to queue up another one.
     */
    private final OnCompletionListener beepListener = new OnCompletionListener() {
        public void onCompletion(MediaPlayer mediaPlayer) {
            mediaPlayer.seekTo(0);
        }
    };

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.user_2dcode_scan:
            this.finish();
            break;
        default:
            break;
        }
    }

    class ShopInfo {
        String shopId;

        String shopName;

        String shopUrl;

        boolean convertData(String barCodeStr) {
            int index = barCodeStr.indexOf(",");
            if (index <= 0)
                return false;
            shopName = barCodeStr.substring(0, index);
            shopId = barCodeStr.substring(index + 1);
            shopUrl = "http://www.ichsh.com.cn/front/merchant/shop/" + shopId;
            return true;
        }
    }
}